How attached are Americans to old-fashioned books? Just look at the results of a Pew Research Center survey released last month. The report showed that the percentage of adults who have read an e-book rose modestly over the past year, from 16% to 23%. But it also revealed that fully 89% of regular book readers said that they had read at least one printed book during the preceding 12 months. Only 30% reported reading even a single e-book in the past year.